@use 'sass:map';

@use '../checkbox/m2-checkbox';
@use '../core/theming/inspection';
@use '../core/tokens/token-utils';
@use '../core/typography/typography';
@use '../radio/m2-radio';
@use './m2-list';
@use './m3-list';
@use '../core/tokens/m2-utils';
@use '../core/theming/theming';

@mixin base($theme) {
  $tokens: m2-list.get-unthemable-tokens();
  @if inspection.get-theme-version($theme) == 1 {
    $tokens: map.get(m3-list.get-tokens($theme), base);
  }

  @include token-utils.values($tokens);
}

@mixin color($theme) {
  $tokens: m2-list.get-color-tokens($theme);
  @if inspection.get-theme-version($theme) == 1 {
    $tokens: map.get(m3-list.get-tokens($theme), color);
  }

  @include token-utils.values($tokens);

  @if inspection.get-theme-version($theme) != 1 {
    .mdc-list-item__start,
    .mdc-list-item__end {
      $tokens: m2-radio.get-color-tokens($theme, primary);
      @include token-utils.values($tokens);
    }

    .mat-accent {
      .mdc-list-item__start,
      .mdc-list-item__end {
        $tokens: m2-radio.get-color-tokens($theme, secondary);
        @include token-utils.values($tokens);
      }
    }

    .mat-warn {
      .mdc-list-item__start,
      .mdc-list-item__end {
        $tokens: m2-radio.get-color-tokens($theme, error);
        @include token-utils.values($tokens);
      }
    }

    .mat-mdc-list-option {
      $tokens: m2-checkbox.get-color-tokens($theme, primary);
      @include token-utils.values($tokens);
    }

    .mat-mdc-list-option.mat-accent {
      $tokens: m2-checkbox.get-color-tokens($theme, secondary);
      @include token-utils.values($tokens);
    }

    .mat-mdc-list-option.mat-warn {
      $tokens: m2-checkbox.get-color-tokens($theme, error);
      @include token-utils.values($tokens);
    }

    // There is no token for activated color on nav list.
    // TODO(mmalerba): Add a token to MDC or make a custom one.
    .mat-mdc-list-base.mat-mdc-list-base {
      .mdc-list-item--selected,
      .mdc-list-item--activated {
        .mdc-list-item__primary-text,
        .mdc-list-item__start {
          color: inspection.get-theme-color($theme, primary);
        }
      }
    }

    // TODO(mmalerba): Leaking styles from the old MDC list mixins used in other components can
    //  cause opacity issues, so we need this override for now. We can remove it when all
    //  Angular Material components stop using the old MDC mixins.
    .mat-mdc-list-base .mdc-list-item--disabled {
      .mdc-list-item__start,
      .mdc-list-item__content,
      .mdc-list-item__end {
        opacity: 1;
      }
    }
  }
}

@mixin density($theme) {
  $tokens: m2-list.get-density-tokens($theme);
  @if inspection.get-theme-version($theme) == 1 {
    $tokens: map.get(m3-list.get-tokens($theme), density);
  }

  @include token-utils.values($tokens);

  @if inspection.get-theme-version($theme) != 1 {
    $system: m2-utils.get-system($theme);
    $density-scale: theming.clamp-density(map.get($system, density-scale), -5);

    .mdc-list-item__start,
    .mdc-list-item__end {
      $tokens: m2-radio.get-density-tokens($theme);
      @include token-utils.values($tokens);
    }

    // TODO(mmalerba): This is added to maintain the same style MDC used prior to the token-based
    //  API, to avoid screenshot diffs. We should remove it in favor of following MDC's current
    //  style, or add custom tokens for it.
    .mat-mdc-list-item {
      &.mdc-list-item--with-leading-avatar,
      &.mdc-list-item--with-leading-checkbox,
      &.mdc-list-item--with-leading-icon {
        &.mdc-list-item--with-one-line {
          height: map.get(
            (
              0: 56px,
              -1: 52px,
              -2: 48px,
              -3: 44px,
              -4: 40px,
              -5: 40px,
            ),
            $density-scale
          );
        }

        &.mdc-list-item--with-two-lines {
          height: map.get(
            (
              0: 72px,
              -1: 68px,
              -2: 64px,
              -3: 60px,
              -4: 56px,
              -5: 56px,
            ),
            $density-scale
          );
        }
      }
    }
  }
}

@mixin typography($theme) {
  $tokens: m2-list.get-typography-tokens($theme);
  @if inspection.get-theme-version($theme) == 1 {
    $tokens: map.get(m3-list.get-tokens($theme), typography);
  }

  @include token-utils.values($tokens);

  @if inspection.get-theme-version($theme) != 1 {
    // MDC does not have tokens for the subheader.
    // TODO(mmalerba): Discuss with MDC about adding them, or create custom tokens.
    .mdc-list-group__subheader {
      $system: m2-utils.get-system($theme);
      font: map.get($system, label-large);
      letter-spacing: map.get($system, label-large-tracking);
    }
  }
}

/// Defines the tokens that will be available in the `overrides` mixin and for docs extraction.
@function _define-overrides() {
  @return (
    (
      namespace: list,
      tokens: token-utils.get-overrides(m3-list.get-tokens(), list)
    ),
  );
}

@mixin overrides($tokens: ()) {
    @include token-utils.batch-create-token-values($tokens, _define-overrides());
}

@mixin theme($theme) {
  @if inspection.get-theme-version($theme) == 1 {
    @include base($theme);
    @include color($theme);
    @include density($theme);
    @include typography($theme);
  } @else {
    @include base($theme);
    @if inspection.theme-has($theme, color) {
      @include color($theme);
    }
    @if inspection.theme-has($theme, density) {
      @include density($theme);
    }
    @if inspection.theme-has($theme, typography) {
      @include typography($theme);
    }
  }
}
